Katy, I use the lemon scent, and it is very strong. I crack the window, even in the winter, while I use it. I have a glass shower that is a great deal of work to clean, and I use Scrubbing bubbles on the tile walls (2 walls.) I would use this with caution if you have asthma.
We end the morning's final shower by using a squeegee on the glass part of this shower because it was becoming too much to deal with.