ordering SN from Poland or IC?

[Kasumi]

I live in west EU and I'm a little bit worried what might happen when they check my order at customs.
And they might not open packages when they're from within the EU aka Poland.
That said I've seen people successfully order SN from IC to my country as well.

Does it even matter where I order it from, meaning is there any "preferred" way and can I get in any kind of trouble ordering it?
I went to a pharmacy yesterday and asked if I could order some from them as I've found a post (not here) claiming that it would be legal to buy here, but the clerk at the pharmacy told me she's not allowed to sell SN to private persons.

 

[Tartuffe]

I ordered to the UK from IC, came in 5 days including the weekend. The package stated it ess curing salts on the label.

 

[lonelyguy]

I ordered from a site in poland. it comes in 25 gm bottles which is perfect. took a bit of time to get here (Canada) but it was delivered without a problem. The only thing is the package did have a warning sticker on it that it contained a chemical

 

[Mayonaise]

I live in west EU and I'm a little bit worried what might happen when they check my order at customs.

Poland is in EU and Schengen area so no customs whatsoever.