How clean is the air where you are? Some may not realize it but more places are getting polluted by the day and it seems that people just ignore the fact that they are breathing in dirty air that ultimately destroys their lungs. It can be disturbing especially if you are concerned with the air you breathe. The people who are usually concerned are those who are already suffering breathing difficulty like having asthma. Worse, if the victim is a child and one can only do so much to alleviate the pain of breathlessness.
Many people do not have respect for others. The fact that there is a no smoking sign inside the public utility vehicle, still, some would smoke their cigarette. To make matters worse, many times the driver himself is the culprit justifying that the sign starts at his back towards the passengers, excluding himself. While you can ask them politely to stop, others will not, and all you have is yourself and the polluted world. How do you breathe then?
The more polluted the air is, the more you should control your breathing, making sure you do through the nose because that is where the oxygen is processed. Otherwise, you will end up panting. Rabbit Air can help too.