Sorry, it's a valid idea but it's not going to happen
- It's tricky to find co-passengers. You would have to catch them at check in, before they check in their luggage. If you check in with Air Canada in Vancouver, there are flights to many different destinations. How would you find someone who goes to the same place?
- It's specifically against safety instructions that are blaring through the loudspeakers every 10 minutes "Do not transport items you have received from strangers".
- If security asks the passenger "have you received any items from someone else" (which they occasionally still do), the passengers would have to either lie or a lot of awkward explaining to do.
- You'd have to figure out how to meet at the destination and potentially exchange phone numbers.
So yes, you could get in trouble since you are asking people to do something that security specifically and very publicly prohibits.
