I have a cat, and of course, I'm the SAHM, I clean the litter. Since I found out I was pregnant I've been using a respirator face mask, is that safe enough?! It's meant to block out toxic fumes and things like that, the ones used around mold, toxic paint fumes, etc. I can't smell ANYTHING when I'm wearing it, is that okay? I know I can't get my husband to clean the litter box..and I don't want to wait for him to do so, any input?!