Potty training

I'm having problem with my potty training. This morning I nearly peed in the house twice, but godpa was sharp enough to notice and shouted "No!". He quickly got me onto the designated toilet area but I just couldn't do it. He tried waiting for me until he gave up and took me downstairs.

He's tried putting pee and poo under the newspapers, and even bought a stinky housebreaking spray. So far I've peed once in godpa's bedroom, once in the kitchen, and twice in the guest toilet. Godpa doesn't know whether it's the smell, location, or texture of the place that attracts me to pee/poo. He's going to keep trying till I get it right.