Very chemical smelling, a burnt kind of smell

I read that pumpkin scent is a very popular scent. Since my wife loves pumpkin pie I figured she will like this. The scent is fairly close to pumpkin when you actual put it up to your nose but not exact. However, when it is plugged in and starts to diffuse or whatever the term is it becomes extremely chemical smelling. That chemical smell is very off-putting. In addition, it has this underlying burnt smell to it. We have it set at the 2nd lowest setting. We will not be buying this again.

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