A fire appliance is a vehicle designed to assist in firefighting and other rescue operations. It is normally based on truck chassis and weigh over 12 tonnes.
"All concerned agencies have been mobilised to check the source of the foul smell being complained of by several residents in the areas of Chembur, Ghatkopar, Kanjurmarg, Vikhroli & Powai," the corporation added.
Asking people in these areas not to panic, the civic body said the situation is being monitored. "Any one having problems due to the foul smell please put a wet towel or cloth on ur face covering nose," it tweeted.
Shiv Sena minister Aaditya Thackeray, whose party controls the BMC, tweeted, "Situation is under control. I urge all not to panic. All possible and necessary resources are mobilised.
"With regards to the foul odour across some parts of Mumbai, as of now the Mumbai Fire Brigade has been activated with its SoPs. I appeal to all to stay indoors, not panic. Close your windows," he added.