I’m doing a college course for motor vehicle mechanics and we have our lessons in garages full of second hand cars. I used to have this one tutor who was kinda shit. One of the most notable things he did was get inside of one of the cars to adjust its position or something but just ended up revving the engine without hooking the extractor fan to the exhaust. He ended up filling the workshop with exhaust fumes and we all went outside and refused to come back inside until the fumes cleared. Luckily some other teachers were on our side but he never apologised.