Layered transition metal dichalcogenide (TMD) materials possess novel and unique semiconducting properties when exfoliated into thin sheets or individual layers. The exfoliation leads to effective sensing towards gas molecule due to the increase in surface-active sites and edge zone disorders. In this work, we present exfoliation of bulk WS₂ sheets with liquid-based dispersion technique using facile bath sonication method for NO₂ molecule sensing. The exfoliated WS₂ nanosheets show reversible and selective response towards NO₂ gas molecules operating at room temperature. The sensitive film shows p-type characteristics providing sensor response rate around 27% for 10 ppm NO₂ with rapid response and recovery time around 45 s and 60 s, respectively. The sensitive response was further studied at high temperature of 150 °C showing a drastic increase in response rate as 45% with effective response and recovery time. This improvement in NO₂ gas sensing was attributed to the facile exfoliation of WS₂ nanosheets.