If muriatic acid seeped under a wall in a garage crawl space and the space was then sealed with Rustoleum paint could it be the source of a terrible odor on inside wall of the house and is it fixable?

Answer 1

Sounds like the muriatic acid didn't have the fresh air needed for it to evaporate. The papers I've read suggest neutralizing it (muriatic acid is a dilution of hydrochloric acid) with a baking soda mixture. Would it be possible to aerate the crawl space and add baking soda to the area?? Not sure if the rustoleum somewhat slowed down or delayed the evaporation by closing of one source of air.