Mr heater giving off smell stinging my eyes

My friend uses a turbo barrel looking one that is loud but heats a very large area
when the winter time comes I don't say anything about it because he lets me use his shop, he is not affected at all, I stay low close to the floor as I can and walk outside
and pretend I am on the phone to get fresh air in me.. the poison gases go up unlike unburned Lp gas, it goes to the floor. be careful this stuff has taken many people life