"You are supposed to kill mosquitoes not the human beings. You cannot take risk with the health of the people.
"Carry out the disinfectant fumigation prior to loading of passengers or when the aircraft is empty," a bench headed by NGT Chairperson Swatanter Kumar said.
The green panel directed the Ministry of Civil Aviation and the Directorate General of Civil Aviation to issue neccessary directions in this regard.
Kumar had contended that spraying of pesticides on planes with chemicals like phenothrin, an organo-phosphorus neurotoxin, was injurious to human health as their use carries risk of causing cancer and auto-immune diseases like lupus, Parkinson's disease and memory loss.
According to the petitioner, while all other airlines have stopped spraying of pesticides, this practice is prevalent in all the Indian airlines operating internationally.