Olivier5

My pool company just installed an intellipool system (salt chlorinator with automatic ph adjustment). For the automatic ph lowering, they put a big bottle of Sulfuric Acid 37.5% in my pool shed. They left the bottle open and put a probe/sucking stick in it. The problem is that when I enter the little pool shed, it smells like acid really bad. When I asked the pool company, they told me its ok. I have questions about the health effects of inhaling those fumes, and if they are not supposed to seal the bottle off properly. I also hope that the couple of times I inhaled the air while being in there won't affect my health long term. Attached I included a picture of how they setup the bottle. Can anyone tell me if this is dangerous, if my health will be affected and if it is normal to leave it opened like that? Picture: http://i.imgur.com/MxIDfDR.jpg Thanks