I just checked on the Chronic obstructive pulmonary disease (COPD) NHS website and one of the first things it says is dont go outside when air quality is at risk of irritating the condition. It also goes on to list other things that can upset your lungs, things like dusty conditions car and lorry exhaust fumes and one that I had never considered air freshener sprays or plug-ins I know myself sometimes I find the smell from them a bit over powering, and things like cleaning chemicals and sprays. I know recently my wife changed the toilet cleaner / bleach and it caused me to open windows and moan about its effects on the house. Another one I hadn't considered was hairspray I know how that stuff stinks bit when you think about it you spry that stuff and breathe it in and it is really just airborne glue. No wonder they warn you not to go near it.
I suffer from Sleep Apnea which causes my throat to close up when I am breathing whilst asleep. It was happening 32 times an hour and it caused me to break my sleep and I wasnt getting the quality sleep I needed and was always feeling tired. I know have a mask which I pop on before going to sleep. it is connected to a pump which blows air up my nose and keeps the airways open. Brilliant bit of kit. I no longer wake up tired and very rarely sleep in the afternoons anymore.