Yes, if we get nuked it would be very helpful to be wearing a mask at the time. Sometimes you just can't make this shit up. The best comedy comes from real stuff, not made up stuff. This reminds me of a story I read a few years ago. Here is the link:
That advice came in guidelines issued to residents of Guam on how to prepare for a missile threat on the island. The reason is conditioner can trap radioactive particles in strands of hair.
www.npr.org
So, two things you really need to know:
Wear your mask before the nuclear bomb detonates and don't use hair conditioner after the blast. Of course these only apply to those who aren't vaporized.