first get a test for asbestos done..it’s common in popcorn ceilings. If asbestos is present, have a pro come in and remove the popcorn ceilings. They have the right personal protective gear. Respirators, overalls, etctra.
if no asbestos wet the area down start scraping the stained area off. Chec at big box diy for pop corn texture in a spray bottle
first get a test for asbestos done..it’s common in popcorn ceilings. If asbestos is present, have a pro come in and remove the popcorn ceilings. They have the right personal protective gear. Respirators, overalls, etctra.
if no asbestos wet the area down start scraping the stained area off. Chec at big box diy for pop corn texture in a spray bottle
If it is only stained, you can paint with Kilz and it will cover it.