Have you ever been the victim of a drive by tooting?

Someone surreptitiously drops a bomb in your vicinity. There's just enough people around to make a positive ID uncertain. The perp also moved faster than the smell is no longer in the immediate area. However, you are left with the odor of rotten eggs and/or dead animal. An incapacitating nausea ensues. An ambulance needs to be called. You reach out for fresh air...gasping...gasping...pleading for someone to open a window...teetering on the brink of unconsciousness....realizing just why the UN has outlawed biological weapons.