Why I don't smell much the scent of Aroma Reed Diffuser Oil in my living room?

无火香薰挥发精油为什么放在我家客厅里，感觉味道不浓？

youdao

A blend of Geranium, Lavender and Bergamot alleviates anxiety and depression. Use in a room diffuser or 6-8 drops of this blend in the bath.

天竺葵，薰衣草和佛手柑混合可以缓解忧虑和消沉。可以放在室内加湿器里或滴6 - 8滴在浴液中。

youdao

The Red Bull is the only car to incorporate a pull-rod rear suspension, which is incorporated into their gearbox design and means there is little room at the back of the car to add a split-level diffuser.

BBC: Red Bull considering new diffuser