recommendation for waterproof sealing primer?

[Bigote]

i have some minor water stains on a wall I need to paint.  I prefer something that dries quickly and hopefully doesn't have too many noxious fumes (i have respiratory issues). 

Any recommendations?

[tooqk4u22]

Kilz has always done the job for me.  Make sure whatever caused the stain is fixed first.

[stinkindog]

i like porter's blankit. has always performed well for me.

[anotherAlias]

I'll second Kilz.  It covered the horrible red stains in the plaster of my old dining room when Bin 123 wouldn't. 

[Bigote]

thanks, everyone.

[paddedhat]

I just covered some light water staining on a bedroom ceiling with a Zinnser product that is a bright white ceiling paint the does primer/sealer duty, and it is a pepto-bismol pink as you apply it. Absolutely fantastic stuff. I went on to paint a few more ceiling with it, and it's hands down, the best ceiling paint I ever used.