Good find brah!

If you can smell it that strongly, your water company is still using Chlorine gas.

Not sure if it's the only culprit here.
High humidity alone can cause those symptoms as the plant struggles to transpire.
Eliminate the chlorine and see if it continues.

Mahalo fo' da info.

Weezard
Weezard Reviewed by Weezard on . Yellowing chlorosis from humidifier?! Just posting this up because I had a real eureka moment this week. My seedlings grow in the laundry room, which is normally fairly humid to begin with, so I don't have to humidify. As the temps dropped recently and the heat came on more often, I decided to use a supplemental humidifier. My tap water is fairly chlorinated, so I always let it sit a long time before I use it for watering or nute mixtures. The pH is naturally right around 6.5, so that's not a concern. About a week or so in Rating: 5