How do you keep from feeling like you're drowning? The thought of use is cringe-inducing.

This is the first sinus rinse where I DO NOT have that feeling. It’s so much better than traditional neti pots for this exact reason.

Doesn’t this burn like when you get water up your nose while seimming?

Not if you do it right. Part of the burn from swimming is that you’re fighting the water from going into your nose. The gravity system of the Neti pot combined with relaxing and letting the water flow. Read the instructing Thoroughly

Where can I buy these exact same salt packets without purchasing the bottle again?

Both the neti pot salt packets inside and the individual nasal wash bottle can be purchased from the Waterpulse flagship store.

Doe it work with those suffering from allergies and other sinus problems?

The neti pot is used for sinus rinsing which give users relief from various nasal symptoms, such as a runny nose or a post-nasal drip. It is suitable for those suffering from allergies and other sinus problems.

How it differs from a traditional Netty pot?

I would think it would help more than a traditional Netty pot because with the button you are putting constant pressure on the water flow.