An open flask of industrial liquid gas that is venting into the indoor environment should be thought of as the same as a smoldering fire, as they both create a dangerous oxygen deficient environment for the human.

If the choice is dying from COVID-19 or surviving by wearing a hazmat suit, a gas mask and goggles to the shops, I choose the latter.

The smartest person in the store is wearing a hazmat suit, gas mask, googles and rubber gloves.

Nitrogen gas has killed and maimed many people.

The toxicity of medical and industrial gas to the human depends on where it is used. A gas that is regarded as safe in a well ventilated environment at sea level may be a toxic gas in an indoor environment at high altitude.

We are in the Frankenstein era.

Altitude sickness, unregulated drugs and medical gas enabled workers to become drug abusers/addicts

Avoid living in new homes and working in new offices due to the high levels of chemical out-gassing that they exhibit during their first year.

To fart or not to fart, that is the question.