Good Air Filter
Does an amazing job at filtering out whatever smells are coming from your mouth. A bit overpriced I feel but it is easier than building your own. Tends to get clogged with water vapor from your breath far before the end of its life. Seems hard to dry out, it needs to sit un-used for a few days. If you plan on using one daily, get two and switch back and forth.
Rating: 4 stars