Complex sentence: However, there is a concern for the health, exhaled vapor consists of nicotine and some other particles, primarily consisting of flavors, aroma transporters, glycerin and propylene glycol.
Split into simpler sentences: However, there is a concern for the health impact of nicotine and other added ingredients. Exhaled vapor consists of nicotine and some other particles, primarily consisting of flavors, aroma transporters, glycerin and propylene glycol.