Yesterday, I received a fake email with a transaction of $120.99 for Opodo Ltd. But, when I sign into PayPal account at www.paypal.com, there was no activity of the transaction.
When you receive a PayPal email, always go directly to www.paypal.com and sign into your account, instead of clicking on the links in the email. This will prevent you from clicking on links that may take you to phishing or fake PayPal websites. Once you have signed into your PayPal account, you should be able to view the transaction stated in the email. If there is no such transaction, then you know the email is a fake.