Dust was n will be there for ever around us, its u n ur immune system need to resistance for the same as it became hypersensitive, ...due to accumulated toxins n non-toxic metabolites..in u. n ur systems...those need to drain n add desired strength by Authentic Holistic Ayurveda Approach of Detox n Rasayan Therapy, till u consult Reduce salty n sour food n drinks, late night life or kind of job ur into may be culprit, I suggest you to have bath empty stomach after ur night shifts/duty.. without alcohol. Have power food after refreshing n calming rest.... feel free to communicate.