fill it with coffee too, fresh ground cheap coffeeCoffee thermos airtight too
but they picked up on xraycigarette packs are lined with foil.
As long as it looks good on the outside it goes right down the belt. They never check mine.but they picked up on xray
No tinfoil is going to stop x-ray. Besides, if you try to mask, with say lead.. well now you have a suspicious “dead spot” and it’s getting torn open for sure.cigarette packs are lined with foil.