I would like to ask experts: How does bottled liquefied petroleum gas stink people?

You don't have to stink in the factory. Liquefied gas can be odorized at gas storage places in refineries and petrochemical plants or at primary or secondary stations.

Civil gas must be odorized, but not necessarily in the factory.

Some industrial gases are odorized and some are odorless to supply some special industrial customers who don't need odorization. For example, Zhuhai Xinhai energy supplies odorized and odorless liquefied gas, and individual industrial users stipulate not to odorize it.