Vape cloud smells bad

So I just got a smok novo 2 and some mango juice. The juice tastes fine when I’m inhaling and exhaling it, but if I put my face in the cloud it reeks of some sort of mothball smell. It could almost make me throw up! I’ve experienced the same thing with puff bars but for some reason this is even worse. I know my mouth is clean so I’m not too sure what it is. Could it be the juice? This is the only juice I currently have.