Whooping cough was bad here this year. I had it for about 4 months.
Smoking decreases lung function significantly, so it's even harder to clear phlegm out.
Get a mucolytic/bronchodilator combination syrup. Bisolvin Linctus DA is very good one. Effective and sugar free.
The colour of your mucous indicates that you have an infection.
Smoking with any respiratory tract infection obviously does not help and will only intensify the symptoms as well as the blocked nose. Still smoking while sick is like adding fuel to the fire.
Perhaps you need an immune booster, Vit D, Vit A, Vit C and B12 Complex. Smoking depletes or eliminates the effective absorption of micro nutrients needed by the body.
See your GP for an anti-biotic.
Thank you for your comments would any of them cause trouble breathing mainly at night or is that just my anxiety