The epoch of wireless sensor network is progressing faster due to the rapid improvement of wireless technology. The sensor network comprises of inexpensive, tiny size thousand of sensor nodes to sense the environment. Smoke pollution is becoming a potential threat nowadays. Smoke generates due to the burning of coal, diesel, cigarette, chimneys as well as the chemical used in building materials. The smoke sensors are capable of sensing smoke. A specific area of a city has been considered for smoke sensing where industries as well as congested vehicles with radius are about 4 km. The leading aim of this paper is to assess IARP, IERP and ZRP routing protocols for cloud smoke sensing with distinct performance metrics like average energy depletion in transmit mode, receive mode, idle mode, residual battery capacity, data packets and requests received, data requests sent, the number of packets dropped using Qualnet 7.1. The simulation result shows that the IERP routing protocol provides excellent result in terms of average energy depletion in transmit mode, receive mode as well as the less number of packets dropping than IARP and ZRP routing protocols.