ฆ่าเชื้อ(kâa chúuea)

[to] kill germs/pathogens

to destroy or inactivate microorganisms (e.g., bacteria, viruses, fungi), such as by heat, chemicals, UV light, or drugs

[to] disinfect/sanitize [sth]

to reduce harmful microorganisms on a surface or object to a safe level; does not necessarily remove all microbes

[to] sterilize [sth] (kill all microorganisms)

to eliminate all forms of microbial life on something, as required in medical or laboratory settings (e.g., via autoclaving)