Yes, expired makeup can potentially lead to respiratory issues, especially if it's a product that you inhale, such as powder makeup. Over time, makeup can harbor bacteria and fungi, which can multiply and thrive, especially in moist environments. When these microorganisms are inhaled, they can cause respiratory infections, allergies, or other respiratory issues.

Moreover, the chemical composition of makeup can change over time. As makeup expires, the preservatives that prevent bacterial growth lose their effectiveness, which can lead to an increase in harmful microorganisms. Additionally, certain ingredients can degrade into potentially harmful substances. For instance, expired mascara can lead to eye infections, which, if severe enough, can potentially spread to the respiratory system.

Therefore, it's crucial to pay attention to the expiration dates on your makeup products and replace them as necessary to maintain your overall health.