I have an LLC IRA that I use to buy and sell cryptocurrency. I don't need to disclose that on my personal returns when they ask the question about virtual currency?

You don't need to disclose that and can answer No to the question IF your LLC file a partnership tax return and  issues form K-1 to you. However, it you report the income or loss form the LLC on your Schedule C which means you LLC is disregarded entity, you must disclose your cryptocurrency operations and answer Yes to the question.