I have a spa attached to my pool. All chemicals are pretty well balanced. I ran the spa last night and with the air control fully open and the jets making bubbles there was a very distinct body odor smell from the bubbles. With no bubbles, it was fine. Never had this happen, not sure what would cause that kind of smell? Definitely wasn't me as there was another person in the hot tub and could smell it as well. Could it be something not balanced causing that kind of odor?