Three bodies were found inside the Jimbo Hotel, and judging from the situation at the scene, they should have inhaled the gas in the silver-white cylinder at the head of the bed and died of poisoning.

We were just about to leave when Jiang Tingbai suddenly said that he smelled a smell of rotten apples in the room.

"The smell of rotten apples? I didn't hear anything. Hearing Jiang Tingbai's words, I sniffed carefully.

The smell of the rotten apple he said is likely to be the smell of the toxic gas in the cylinder, but after a long period of window opening, the toxic gas has been diluted by the air and the concentration is very low, so it will not cause harm to the human body.

Jiang Tingbai also paid attention to the news, and he was very sure that he smelled a smell of rotten apples: "I really smell it." ”

Jiang Tingbai's sense of smell is very sensitive, and his nose will definitely not lie. I stopped a criminal police officer from the technical team who was in charge of the scene investigation and asked seriously: "Are there rotten apples in the room?" ”

The criminal police officer of the technical team in front of me was stunned by my question, he looked at me very suspiciously, and said in a deep voice: "There are no rotten apples, we checked the trash can in the room, there is no garbage, it is empty." ”

"There are no rotten apples in the room, so it means that the smell of rotten apples is most likely the smell of harmful gases." I retracted my thoughts and said lightly.

"Rotten apple-smelling noxious gases? Laughing Q has a faint sweetness, but it definitely doesn't taste like a rotten apple. An anti-narcotics policeman next to us said to us seriously.

"Wait, I suddenly remembered that the boy in the hospital had said that he had smelled a strange smell." Li Meng suddenly interrupted us all, and looked at us in a daze, his gaze first sweeping the room, and then falling on us.

After Li Meng finished speaking, I also carefully recalled that the boy did not smoke the so-called laughing Q in the cylinder with them, but the boy said that when they smoked, they did smell a strange smell, and the boy said that it was a somewhat pungent rancid smell, as if it was the smell of rotten grass.

"This clue is very important, and it has a very important reference value for us to identify the poison gas in the cylinder." I said in a deep voice.

The most important thing at the moment is to detect the gas in the cylinder, which is very troublesome to detect unlike liquids and solids, and the more conventional means is to use the chemical principles of catalysis. However, the gas in the cylinder is toxic and has very high requirements for the laboratory environment.

The criminal police team has taken away the cylinders containing the poisonous gas, and it may be necessary to cooperate with some chemical laboratories in Renxi City to cooperate with the inspection.

But these things are not for us to worry about, we are just criminal police, not chemical experts, since we can't help, we won't follow the chaos, just be patient and wait for the results.

The technical team has already investigated room 332 where the crime occurred, and we are ready to evacuate the scene.

In the hall on the first floor of the Jinbo Hotel, Gong Haonan, the captain of the criminal police of Renxi City, was learning about the situation from the innkeeper.

If we hadn't come here to check on him, the innkeeper wouldn't have known that someone had died in his room. When he saw the three bodies carried by the police onto the corpse truck, his brain buzzed, and he went blank for a moment.

"They came in the afternoon, and there were four of them, all about the same age. When they opened the room, they were still talking and laughing, chatting and saying that they were going to go to a nightclub tonight. I was also a little curious at the time, the four young men actually opened only one room with a large bed. But I just asked them about whether they were going to open a room, and as for what they were doing in the room, I really didn't know, they were coming to stay with me for the first time, and I didn't know they were going to die in the room. ”

The innkeeper became more and more excited, and the more he talked, the more nervous he became, and every cell in his body trembled.

While Gong Haonan was asking the boss, he asked the criminal police to retrieve the surveillance video in the hotel, whether it was the surveillance on the first floor or the third floor, some of them were the same as what the innkeeper said.

At two o'clock in the afternoon, after four teenagers came to the front desk to open the room, they walked into 332 with a smile and a smile.

One of the teenagers was carrying a backpack on his back, and it seems that the cylinder was brought in the backpack.

After about an hour, one of the teenagers left the room and never returned. And this teenager is the only survivor in the hospital.

Since then, until our police came to the door, the door of 332 has not been opened again, no one has entered or exited, and the owner of the store has been sitting at the front desk on the first floor and has never left.

The innkeeper's confession is completely consistent with the content in the surveillance video, and this case has nothing to do with the innkeeper, so his suspicion can be ruled out.

All the police officers withdrew from the Jinbo Hotel and all the officers returned to the Renxi City Criminal Police Team to investigate the poisoning case.

Our serious crime team rushed from Ningzhou to Renxi City to investigate the fugitive person involved in the D case of the Forget Worry Bar, and now he was poisoned to his own residence in Renxi City, and before the matter was clarified, another poisoning case appeared.

It is not known whether there is a connection between the two cases.

It was a little later than Ningzhou City in Renxi City, and when I returned to the criminal police team, it was just getting dark.

After a long day of travel, we didn't have time to rest, and we immediately had to devote ourselves to solving the case.

The gas in the cylinder is still being tested, but based on the smell emitted by the gas and the condition of the gas after it enters the human body, we have a rough guess.

In the office of the criminal police team, the projector reflected a news on the white screen on the wall:

At about 9:30 a.m. on June 15, 2004, a subsidiary of a provincial Institute of Material Structure caused a toxic phosgene leak due to improper operation during the experiment.

Since the evening of the same day, among the employees of this institute, symptoms such as cough, dry mouth, and tears have appeared one after another, and nearly 600 people have gone to the hospital for examination, and more than 300 of them have been seriously poisoned.

According to the person's recollection, after the phosgene leakage accident, they developed headaches, coughs and chest tightness one after another.

According to the doctor at the local emergency center, from the film, most of them are manifestations of acute bronchitis, with thickened lung markings, and more serious is pulmonary edema.

"This is a serious phosgene poisoning incident, and this phosgene is a kind of rotten grass gas. The symptoms of the boy in the hospital are very similar to those of phosgene poisoning. Gong Haonan said to us seriously.

"So, what that cylinder contains is not a laughing Q at all, but a highly toxic phosgene?!" I frowned and asked in shock.

First of all, where did this phosgene come from, let's just say why this phosgene appeared on the D product market, pretending to be sold by Xiao Q?