As long as the lights aren't on for more than a few minutes you'll be fine.
Now, if you go into your flower room and decide to do work for three hours with the light on in the middle of the night cycle then yes, you'll mess them up. But a few minutes with a light , they won't skip a beat.
Ya, a couple of minutes, no big deal. However,I work in my room for extended periods sometimes. I use a these lite covers. I originally used them for screen printing. They work great and I can see to work in safety.