Noticed a yellow stain on ceiling in kitchen. Could this just be an old stain that came through the paint ?

Question

I recently painted the ceiling white (1 coat) and cannot find any evidence of a leak.

Answer 1

Sounds like an old stain, try using Kills it's a primer to cover up such things then repaint the spot.

Answer 2

Are you sure there is no leak? If not, try spraying on Kilz, it's a sealant and will not be noticed. At your home center.