Wood has traditionally been used as kitchen fuel and is still predominantly being used in rural areas. Burning of wood creates many air pollutants which can result in respiratory problems. Moreover, incomplete oxidation during burning of wood creates carbon monoxide which is a poisonous gas. LPG is much better because it burns without giving smoke. It produces lesser amount of air pollutants. Complete oxidation during burning of LPG does not lead to carbon monoxide production.
In this world we are living lpg is readily available and environment friendly as compared to woods.In lpg gas are compressed to maximum extent so that we can use it in limited space and causes very less or negligible pollution but in burning of woods gives out unburnt carbon particles which are harmful for environment and humans as it causes repiratory problems