Hardly. I don't want my food contaminated. I'm all for protecting livestock this way before they're slaughtered for my consumption...
Recorded the Art Bell show the over the weekend. A guy from a volunteer group that uses dogs to find/rescue people was on. Caller wanted to know about the asbestos effects on the dog, why weren't masks used, etc. The guest pointed out that the dogs sort of rely on their sense of smell to find people, so the masks might have an adverse effect on that ability...
I just got a vision of a gas mask on a canary in a coal mine.