[ascorbic]

This might make sense if there weren't shops selling large bottles right after security. Ones full of highly flammable liquids, even.

[necovek]

I am not sure any of it makes real sense, it's just a variation of the "why" I picked up somewhere (that it's both).

But yes, that's easily worked around in the manner people brought up already (I did think of duty free bottles, but not camera cases, that is a good one).

[hdgvhicv]

Or if you couldnt simply take a large empty bottle through.

Howver if you rely on 10 people to take 100ml each that’s a far larger conspiracy and far less likely than one person taking 1l through.

[chipsrafferty]

Like what? Alcohol isn't flammable unless it's over 63%, and you aren't allowed to bring duty free alcohol on the plane.

[umanwizard]

Alcohol is flammable around 40%. French cooks aren’t using overproof brandy to do flambé.

Gunpowder doused in alcohol is, very famously for people interested in the history of rum, flammable if the alcohol is around 57.1% or higher, but straight alcohol/water without gunpowder is flammable at a lower strength than that.

[decimalenough]

Duty-free purchases are all hand carried into the aircraft, and "tamper-proof" bags are nothing of the sort.