AAP Punjab chief says IARI, SAFAR and IITM data show stubble smoke made up only 5% of Delhi. Sangrur: Aam Aadmi Party (AAP) Punjab President and Cabinet Minister Aman Arora on Tuesday put a pointed question to the BJP. How does Punjab's stubble smoke reach Delhi in just 20 minutes? He backed the challenge with data from central research institutions.Stubble smoke contributed only 5% of Delhi's PM2.