Why is the chlorine smell so strong in my hot tub?

Everyone has been hit with that overpowering offensive smell that is associated with chlorine at some point. Which tends to deter people from using it in their spa or pool, and quite frankly who wants to deal with that while trying to relax? That smell however isn’t chlorine at all. When chlorine comes in contact with water, it immediately attacks the microorganisms or organic material (sweat, lotion, make-up, hairspray, ect) left behind from bathers. As it oxidizes these compounds, it forms combined chlorine, this is responsible for the unpleasant smell. When a spa has an odor, people may believe they have added too much chlorine when in fact the opposite is true. the way to rid the spa of that odor is to actually increase the chlorine level or “shock” the spa. Raise the level of chlorine so that it completes the full oxidation of those compounds. once that’s done, the water is now back at a clean state.