What is the definition of Selling Infection?

"Selling infection" is like when a salesperson tries to convince you that the flu shot will make your life more 'chill' or 'viral', when in reality, it's just a fancy way of telling you to buy a vaccine that might not even work, but will definitely make you look like a giggly, infectious mime at the doctor's office.

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Here's an edgy example sentence: "I convinced my cat to 'ell infection' by convincing her that our new anti-aging cream would make him glow like a neon disco ball, but it's more likely he just started giving off the scent of 'I'm dying, but I'm not sick'."