This bacterial waste product can be extremely deadly in some forms. Yet, millions of people voluntarily ingest it every day.
The bacteria produce it as certain materials decompose. It is used by doctors, janitors, racecar drivers and maybe even you.
What is it?

Answer
Alcohol.
In some forms deadly and used as a disinfectant, cleaner or race car fuel. In other forms used perhaps by you in your cough syrup or dinner beverages. Just don’t use too much.