I use a better mask to pour sinkers now,I too "jerdog" spent a few summers doing drywall.....mud..... acoustic ceiling "popcorn". Worked the truck..... throwing a pallet of "texture" into the hopper... A day. Brutal work.
By the next summer... I was doing finishing work...."knock down" and they actually let me start using the gun. People have no idea what it takes.
Sad to say that was the 70's. .. When we still used those materials now called cancerous. Just like our daddies did. My current health reflects those early exposures. Like pouring your own sinkers..... As a kid. Stupid now.... "frugal" back then.
Then I did sanding drywall mud,
And removing acoustic, LoL