Tell me how good my plan is…

I am currently 16 and live in Austria. Me and my friend are going on a school trip to the UK. We wanna bring alcohol, and we have brought alcohol on school trips before.

However, this is my first time doing this on a plane. I put the vodka in the checked lugage. I put the vodka in bottles of mouthwash, since mouthwash also has alcohol, so if alcohol is detected it will make sense, because it is mouthwash.

Am i fucked? Will airport security look through a checked bag, find mouthwash, and be able to tell that it is vodka, then notify my school? Or am I good. I am a bit scared rn.