Buds falling off my dendrobium

[Jonatan]

I got my dendrobium about a month ago. It has two spikes and the first one opened without any problems, the second started opening and then yesterday I found a semi opened bud on the floor and this morning a second one. I placed it in my bathroom, cause I thought that the humidy from the frequent showers would be good for it and because I needed to isolate it. It's under two energy efficient light, which are about two feet away from it. I give it about a good 6 to 10 hours of light a day. Probably the only thing it doesn't get is good ventilation. I water it once a week since it gets great humidity. (I think)
Can strong cleaning product smeels affect the flowering of my plant? Or should I just bring it upstair with the other ones now that I know that it's pest free so that it can get a southern exposure and have real light and the photoperiod that it needs?