There are a few things you can try to stop the burnt taste. 1. Try taking a few drags without inhaling (this helps heat up the coils and get rid of any built-up residue that may be in your Aroma King vape. 2. Try removing the mouthpiece and taking a few drags. This will help to get rid of any burnt taste that might be coming from the mouthpiece. If you try these and your Aroma King vape still tastes burnt, you can try gently blowing into the atomizer as this should help dislodge any burnt bits or, if all else fails, you can always try soaking the atomizer in vinegar for a few minutes to help break down any burnt residue. If you vape still tastes burnt, you should replace your Aroma King vape.