How would a kid ignore those things, they might just come and ask you about what is it. Till when can we lie to them? Don't you think that the frequency of such ads must be less in order to let the kids not get trapped into gambling and don't do it at such a small age?
Why should you lie? Direct answer them about what they saw and feed their mind with knowledge.
Besides, I don't find that kids will have such interest right away if they see will a gambling ads while they are watching. Like any other advertisement, they will just ignore it and hit that
"SKIP" button as they don't want to be interfered on what they are currently watching.
Don't stressed about it mate. That's not an alarming. It's impossible for me that those ads will trapped our kids into gambling. Just do our best to keep them educated in several things like gambling or any other activities that's not fit to them yet.