Daily misting in a dry climate?

[Sardine]

Hi - this is my first post here

I have some orchids that seem to like a warm environment, and some cool. (Laeticattleya, Oncidiums, Polystachas, and then a few Phalanopsis - can't spell sorry.)

I have read way back that it is good to spray these plants with a water mist often (twice daily?) in a dry climate. This I have been doing for a few months since summer.

The plants are ok-ish (the phals - their older leaves have wrinkles) to pretty good (the others) after a year or so. Most of my plants seem to be growing nice new roots this summer.

Is this right? I read something today that said it is not good to spray these plants, as they stop photo-synthesising. The stomata or whatever close when wet?

I dont know much about plants, so not really sure what is best in a dry and warm house.