Ideas aren't cockroaches, they're plants. And sunlight helps poison ivy grow just as much as it helps tomatoes and flowers.

There's no plausible mechanism by which talking about an idea more and more, makes it disappear. That's all an idea is: something to talk about.

Now, if you want to argue that no ideas should ever disappear, go ahead, but don't cloak it in "antiseptic" language. Antiseptic kills things. If you're talking about antiseptic for ideas, you're talking about killing ideas.