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Yes—CO2 cartridges can fly only in narrow cases: in a self-inflating life vest (2 installed + 2 spares) or as empty cylinders; loose spares are refused.

Yes, CBD oil in luggage can be detected during screening via X-ray, manual inspection, and referrals to law enforcement; rules hinge on THC content and where

Yes, a charger can be put in checked luggage if it has no battery; power banks and spare lithium batteries must go in carry-on.

Yes, a computer can go in checked luggage, but carry-on is preferred; if you check it, switch it fully off and protect the battery.

Yes, CLEAR can lead you to TSA PreCheck if you’re PreCheck-eligible and the airport supports CLEAR-to-PreCheck access; CLEAR alone doesn’t grant PreCheck.

Yes, cologne can go in carry-on if each bottle is 3.4 oz/100 ml or less and fits in one quart-size liquids bag.

Yes, charging cords can go in carry-on luggage (and checked bags); they’re simple cables without batteries or liquid.

Yes, solid wax candles are allowed in carry-on; gel candles are not, while both types can go in checked bags.

Yes — canned soda is allowed in checked luggage, but pack it leak-tight, cushion it well, and watch airline weight limits and destination rules.

Yes, Champagne can go in checked luggage; at ~12% ABV it’s allowed in checked bags, so wrap bottles well and keep within your airline’s weight limits.