I'm Andy, from Hardware Recommendations.

As the question stands, it should not be migrated to Hardware Recommendations.

The question, as I understand it, is:

Are there any lubricants that are safe to use inside a laptop?

There is also an implied:

What lubricant should I get?

This is not on topic. Lubricant is not hardware. Our Meta post on What is Hardware? has this to say:

Hardware is any primarily electronic item that can perform more than one task, designed to interface with, connect to, or be, a primary computing platform in day-to-day operation.

A primary computing platform is any primarily electronic item that can perform meaningful tasks on its own with minimal external support, and designed to be operated by a user, consumer or professional.

Lubricant doesn't fit this.

If you are going to change it to a question about what replacement fan to get, then you need to add more details about the laptop. Make, model, size of fan. A broad question such as "What fan should I get?" will be closed. If you've narrowed it down to a small list of fans you are considering, we can help. If you have unique requirements for your fan (ie. it spins and sings a jingle, but only on Tuesdays after a full moon), we can help. But, simply asking for a fan that fits your laptop will not work.

Finally, your question sounds like a technical support question, so I urge you to rework it, because we don't allow those either.

I'm Andy, from Hardware Recommendations.

As the question stands, it should not be migrated to Hardware Recommendations.

The question, as I understand it, is:

Are there any lubricants that are safe to use inside a laptop?

There is also an implied:

What lubricant should I get?

This is not on topic. Lubricant is not hardware. Our Meta post on What is Hardware? has this to say:

Hardware is any primarily electronic item that can perform more than one task, designed to interface with, connect to, or be, a primary computing platform in day-to-day operation.

A primary computing platform is any primarily electronic item that can perform meaningful tasks on its own with minimal external support, and designed to be operated by a user, consumer or professional.

Lubricant doesn't fit this.

If you are going to change it to a question about what replacement fan to get, then you need to add more details about the laptop. Make, model, size of fan. A broad question such as "What fan should I get?" will be closed. If you've narrowed it down to a small list of fans you are considering, we can help. If you have unique requirements for your fan (ie. it spins and sings a jingle, but only on Tuesdays after a full moon), we can help. But, simply asking for a fan that fits your laptop will not work.

Finally, your question sounds like a technical support question, so I urge you to rework it, because we don't allow those either.