why does some people have the custom of sprinkling turmeric mixed water around the house before and after prayers?

Its known that turmeric has antioxidant, antibacterial and anti-inflammatory qualities. Ofcource, its helps more if its being consumed, but sprinkling it around the house helps prevent from bacteria to spread around. Its been widely used in Indian houses whom are pious. This practice is often said absurd because sprinkling turmeric water is said to be uncivilized, but apparently the houses whose houses have turmeric water sprinkled has less news on the people inside the house falling ill.