The Austronesian Comparative Dictionary

*buŋ(e)tút stench, bad odor

PPh buŋ(e)tút stench, bad odor

WMP
Itbayaten voŋtot idea of being stinking; spoiled
vontot spoiled (in relation to cooked food)
Ibatan boŋtot stench (as of spoiled food)
Ifugaw buŋtút stench, applied to dirty water
Kankanaey boŋtót let us see who broke wind! Pronouncing those words children twirl round a crooked blade of grass or something similar between their fingers
Ilokano buŋtót stench of dung, of rotten meat or fish, of stagnant water, of spoiled liquor, etc.