We had the same problem with Roxane.
She had a bad habit of biting my husband on the face when he would pick her up to cuddle her.
When she did this I would remove her from his arms sit her on the floor wag my finger at her right up close to her nose and keep saying "No no no no no bad girl " she would get very upset and try to swat me which usually cost her a tiny tap on her bottom with "Bad Girl " then I would ignore her for about 15 minutes.
This seemed to work for us and Roxane .
As for the water bottle technique, take it from me a water pistol works better, and you can carry it on you.
Best of Luck