It’s not DNA but diet. Indians consume a lot of spicy, potent ingredients such as cumin, chili, garlic, onion, curry and fenugreek leech through your pores and produce strong smells when doing so. Also these ingredients make you fart and shit like a bull which just adds onto the smell.
The main reason Asians thought white people stunk was not just because of white’s lack of bathing, but because Europeans consume milk products, which emanates a rotten cheese smell through the pores in hot weather. Indians, coincidentally and unlike East Asian countries, have had dairy in their diet for thousands of years. This, mingled with the spices and lack of proper hygiene, produces a sickeningly potent stench that only pajeets can master.