I work at a dusty place. what should i do?

What's in the dust?: Depends on what's in the dust - could be low toxicity or highly toxic depending on what's being mined, manufactured, etc. that's causing the dust. At a minimum a cheap paper dust mask which might be OK for occasional sawdust exposure, but there are more efficient masks for more toxic particulates - P95, P99 that remove up to 95 or 99% of particulates, etc. Your health is priceless - protect it!