What are each of the following observations an example of? Drag the appropriate items to their respective bins. There is a gas leak in the kitchen and you smell gas in the bedroom after 10 minutes. When person applies perfume in one corner of the room you can smell its fragrance in another room. When a small hole is made in the top of a coke bottle the carbon dioxide gas moves out of the bottle over time. If the tightly packed food is placed in the kitchen for a long time then you can smell the gas as it penetrates through the small holes in the plastic.