The model in addition to smoke is completely geometry this allows you to take a picture from any angle. Smoke is a plein.
“Who works in the V-Ray version lower than 3.1 be careful in the materials in the BRDF section there is Microfaset GTR (GGX) if your version is older than 3.1 then the BRDF field will be empty. Choose Blinn Phong or Ward – which is preferable for you. ” If the version of CORONA is higher than 1.4: “For Corona render it is recommended to install version no lower than 1.5 since the glossiness of materials is configured taking into account PBR.”