There are very effective homeopathic remedies for smog.

Due To Smog, People Are Suffering Symptoms

From Cough, Cold, Throat Infection, Sore Throat, Breathing Problem, Asthma, Itching Eyes, Watery Nose 

 Homeopathic Remedies

For Watery Eyes - Carbonium Sulph.

For Running Nose- Merc. Sol.

For Cough & Sore Throat- Antim Tart. & Ars. Alb

PRECAUTIONS 

Put 1 Drop Of Mustard Oil In Your Nostrils Before Going To Bed Add Almonds & Walnut in your Diet