towels is a form of:

Fumigation



noun
1.
(វេជ្ជសាស្ត្រ) ការបាញ់ថ្នាំសំលាប់មេរោគសត្វល្អិត ឬរុក្ខជាតិ
ENGLISH MEANING
noun
1.
The act of fumigating, or applying smoke or vapor, as for disinfection.
2.
Vapor raised in the process of fumigating.