2 Protects two people in any situation
Doctor Elena Bodnar has even won an award for her invention the emergency bra. In 2009 she won the IG Nobel Public Health Prize which promotes scientific achievements which may make people laugh but also makes them think. For an average woman, it would take just under 25 seconds to convert the bra into a gas mask. Of course it would also take an additional 20 seconds to choose the lucky person who gets to wear the second cup.