Sentence 1: The coat was old and smelly but he loved it. 
 Sentence 3: He worked at a smelly place so he couldn't help it 
 Sentence 4:  In fact, he sort of liked the smell 
 Sentence 5:  The smell was like memories to him 
 Option 1: He could wash it more often but it would get smelly again. 
 Option 2: It smelled like his girlfriend.