In fact, it is not surprising that both people were poisoned by carbon monoxide. What makes this event unique and attracts people's attention is mainly because of people's imagination. First, we look at where the couple died, in a car or in a garage. If it's in the car, it's nothing special. It must have been carbon monoxide poisoning because they couldn't have died at the same time for any other reason. Moreover, it is reasonable to close the car door and turn on the air conditioner on hot summer days. If it happens outside a car, it's hard to say why.

It should be easier to kill if it happens outside a car. If two people die at the same time, the cause can be eliminated. It also happens in the secluded environment of a garage. Therefore, it is more likely to be killed. It is also possible that criminals took advantage of this space and environment to accidentally attack two people, causing their deaths.

? ?However, the biggest possibility is that the car was poisoned by carbon monoxide. This has happened many times, but it still cannot attract people's attention, which is difficult to understand. As adults, we should have this sense of security. Unfortunately, tragedies still happen. I have to say it's a pity. But that's not entirely surprising. As a rare high-temperature weather event in the Northeast this year, the recent high temperature has reached as high as 367 degrees. It was unbearable. So it’s no surprise that you turn on the air conditioner in your car.

Blowing air conditioning in an enclosed garage can cause a dramatic increase in carbon monoxide levels. Current cars usually have smoke sensors, and when a certain concentration of carbon monoxide is detected in the car, it will automatically switch to internal circulation mode, which is usually no problem if you are driving in the city. However, if you are in a garage, the carbon monoxide concentration will increase throughout the garage regardless of the starting mode.

Experts remind that according to national standards, the concentration of carbon monoxide reaches 50 ppm, which is the maximum concentration that healthy adults can withstand within 8 hours. Experiments have found that in a closed garage, when the car's air conditioner is turned on and kept in an external circulation state, the carbon monoxide concentration in the car can reach 65 ppm in just 5 minutes. Long-term use in such an environment will cause great harm to the human body.