Personally (I use less than most) I do one of lavender, one of orange…. But it’s for my 2 yr old daughter’s room at night. Most people (from reading/talking to people) use between 5-10 drops in theirs. For even me, I find that amount overwhelmingly strong. You can use one oil, or a blend of your own making. I’m newer to oils as well, so I haven’t tried too many, but if you don’t like a scent you need to use just do one drop, and two+ of a more pleasing scent. You can use them all, or just one it’s really up to you.
It’s worth it to have a high quality diffuser to diffuse essential oils. This Smiley Daisy Essential Oil Diffuser, Quite Cool Mist Humidifier, 350 ml has been around for a long while and has great reviews. Smiley Daisy is a cold air diffuser, as well as a humidifier, which is great because it releases moisture into the air and is helpful in providing relief for dry skin, dry throat and cold and flu symptoms such as irritated nasal passages and more. Order below: