It was so bad inside after cooking for 9 months that 10 seconds inside without a respirator and you'd come out gagging. 2 weeks later after stumbling across BP, reading and listening to Podcasts, I decided it would make a killer investment property.

Wear a respirator with organic vapor cartridges as you apply it.

Wear a respirator as it is a really fine powder.

You can wear a painters suit and 100%cheap respirator to protect yourself if you choose.

And they make organic vapor cartridges for respirators, you won't smell a thing!

You put down a tarp to catch little pieces,don a rainsuit and respirator and use a potato fork or roofing spade and they roll right off. 

.* to neutralize muriatic acid just pour some baking soda powder into it, stir and it will neutralize it.You should wear a respirator or mask while working with or neutralizing muriatic acid to avoid breathing in fumes

For the tub:  Go to Home Depot or Lowe's and buy a nice respirator. 

Oh, and some travertine tiles for the kitchen backsplash (which another friend is going to do for me at a discount, which is known in the music world as the "bro-rate").I spent today sanding all the trim (while wearing a heavy duty respirator, since it's possible one of the early layers of paint was lead based).This weekend I'm going to paint the cabinets (solid wood, so I sanded them down and am re-using them with new hardware), paint the trim, and hopefully get started on the walls.

The place was so bad I had to wear a respirator can mask.