I'm all about open-mindedness and am a very understanding person in general, however, when traveling in close quarters with strangers I believe certain coutesies should be observed by everyone. The first and foremost of these courtesies is definitely hygiene. Please, please, please take a shower, with soap, at least one or two days before your flight. I don't care where you are from and what the hygenic practices of your culture are. You are now traveling in the USA and I personally don't like my nasal cavity assaulted by your foul odor. If you refuse to observe this custom, please do not be offended if I spray you with anything I have handy to alleviate the aforementioned odor. Another courtesy, also hygiene-related, pertains to oral care. I understand that you may have just eaten a malodorous sandwich, or large pile of funk as it may seem to be. If this is the case, please refrain from heavy breathing through the mouth to the extent that the passengers in the row ahead of you can smell all three courses of your previous meal. Again, if u choose to ignore this custom, please do not be offended if i offer you gum, a breath mint or physically cover up your offending oral cavity. Thankyou, travelers everywhere!