OBSERVATION

Observation
Smelly people mostly do not know they have an unpleasant smell but people around them do. Perhaps they got use to their smell already. Here are some cases that can find recently in train.
Tobacco case: uncle A smoke as usual, his body has an unpleasant odor and he did get use to this smell for a long time. When he gets in the train, this smell is not very strong but still can make people around him uncomfortable because of his breath. His look does not messy but because of smoking more than 20 years, his tooth look not so clean. Since nowadays the busy life takes people easily to get stress so smoking in young age case increases little by little. Objects of smoking is not only adult, there are too young girls in nice dressing also have tobacco odor.

To solve this problem, people should know the consequence of the smoking may make people be the victim of cancer.
Make-up : Mrs. B, make up and use perfume everyday. Due to strong perfume so when she gets in the train, the smell spread that made someone sneezed. She looks quite nice and cleanliness but perhaps she does not know that she is one of the reasons make the train smelly. This case have seen very usual becase keeping a good look is very important in work in nowadays. 

To solve this problem, the very strong perfume should not be allow sell in the market. By the ways, shoppers should let people know how to use perfume in right ways. 

Place without wind : Mr. C, worker, because offent work in the hot place so getting sweat frequently. When he gets in the train, even though he did change the clother before but he still had an body odor. He looks nothing wrong, because of tired after work, he just keep quiet till the train takes him to his destination or call someone to chat when the train running. 

To solve this problem, goverment should have a break place and fan for each team worker if they work in hot place (e.g place in the sun, street, underground, room of building, etc)