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Understanding Your Purchase: Tips for Duty-Free Shoppers To make your duty-free cigarette purchase seamless, here are a few helpful tips

One important caveat: The MinusA2 has an ionization setting, which our experts don't recommend with any air purifier, since ionizers can release small amounts of ozone (an irritant that can exacerbate existing respiratory conditions) and the science on ionizer efficacy and safety is still inconclusive

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Retrieved 18 July 2011

When you smoke cigarettes, you inhale smoke and combustion chemicals

Its worth dumping some ash first because relighting through it can have an unpleasant, bitter taste