The more parties and layers you get the more the white turns to grey and then fades to black.

Originally posted by @Ronan M.:Ask

Good luck trying to get rid of or worse mask the smell.

That will give you a different perspective and is another layer of DD.

It can add an additional layer of protection.

This place was owned by a little old Italian lady, who wallpapered every surface, with multiple layers of wallpaper. 

If you have the money, i would do that plus add a metal z channel going opposite direction of the joists ( screwed on top of the existing plaster ) and then add another layer of drywall. the Z channel leaves a space that helps in sound transmission. the problem is the sound is transmitted through the existing floor joists too, so just the insulation will not do it because the joists are still against the ceiling. this is something similar, but in this picture they used clips in combination to hold off hat channel from the existing ceiling which will lower your ceiling about another inch. 

Spray cans do a decent job too usually but have to mask off the area.  

Owning property as an LLC is usually to shield you but since most crowdfunding deals are already LLC you are already covered unless of course you're trying to add more layers of obscurity so more difficult to trace back to you for whatever reason ;).

If your not savy with complicated multi layered entity structuring, than don't try to do business like you are, and K.I.S.S.