For the burnt smell of disposable electronic cigarettes, it is generally recommended to stop using them, rather than continue to smoke. There are generally two kinds of burnt smell and mushy taste;
It may be that some parts of the main engine have failed, resulting in a mushy burning smell.
Could mean the liquid capacity is depleted and it smells mushy and burnt.
Regardless of the above situation, it is advised not to use, continue to use may have an impact on health, disposable electronic cigarettes are usually designed for single use, that is, after the exhaust can not be used, if it is the exhaust recommend that you buy a new product, if the product quality problems or consult the business after sale replacement.