Vaccine is related to Shot. Shot is a synonym of Scene. Scene can be used for Paint. 
Smoke is related to Fog. Fog is related to Head. Head is related to Jaw. Jaw is related to Mouth. 
Vaccine <--RelatedTo--> Shot <--Synonym--> Scene --UsedFor--> Paint 
Smoke <--RelatedTo--> Fog <--RelatedTo--> Head <--RelatedTo--> Jaw <--RelatedTo--> Mouth 