Quinten Kohler

I bought a diffuser from Aroma Retail not long ago, and I've been having some problems with the smell. Even when I have it set to high, I can only really smell it when I'm right beside it. I was really looking forward to having a strong scent everywhere in the room. Also, the noise that the diffuser makes is really annoying and I can't seem to get used to it. I'm concerned that my guests might find the hissing sound bothersome.