villain is 12/10, original raiser is 18/15. I cant smooth call the 3bet can I? Fold to the 5bet with this much behind?

Converters not working but doesnt matter.

18/15 raises to $1. 12/10 reraises to $4. I make it $10. Folds around to 12/10 who makes it $20. We are $50 deep and have no history and I have 100 hands on him. He never has worse than KK right?