I sat down in an exit row on a WN flight a couple of weeks ago and as soon as I sat down I hear a guy a couple of rows up hacking away. Sat for a moment to decide whether I wanted to give up the seat on a 4 hour flight or roll the dice. I decided to move back 10 rows and ended up with a row by myself. Shortly after I sat down a young woman sits in the aisle seat opposite me with a mask on. At first I thought I had gone from bad to worse, but she never coughed the whole flight so I assume she was wearing it for preventative reasons. i spent the next 4 hours wondering if I should start using a mask when I fly as I often come back from trips with some type of cold or respiratory issue.