Hello, I'm Dr. Emily Carter, a virologist with expertise in virus inactivation and disinfection. It's a common question, and a good one! Whether or not alcohol can kill a virus depends on several factors. Let's break down the science behind it:

**Viruses are not technically "alive" in the biological sense.** They lack the ability to reproduce on their own and require a host cell to multiply. However, they can be inactivated or rendered incapable of infecting cells.

**Alcohol, specifically ethanol and isopropanol, are known to be effective against many viruses.** The mechanism of action is primarily through disrupting the viral envelope - a protective layer that surrounds some viruses. This disruption exposes the virus's genetic material (RNA or DNA) to the environment, rendering it unable to infect cells.

**The effectiveness of alcohol depends on several factors:**

* Virus type: Different viruses have different structures and susceptibilities. Some enveloped viruses, like the influenza virus, are more sensitive to alcohol than non-enveloped viruses, like the norovirus.
* Alcohol concentration: Higher concentrations of alcohol are generally more effective at inactivating viruses. The recommended concentration for hand sanitizers is typically 60-95% alcohol.
* Contact time: Alcohol needs sufficient time to penetrate the viral envelope and disrupt it. A longer contact time generally leads to greater inactivation.
* Environmental factors: Temperature, humidity, and the presence of organic matter can influence the effectiveness of alcohol.

**While alcohol can be effective at inactivating viruses, it's important to note:**

* Alcohol is not a universal solution. Some viruses, like the norovirus, are resistant to alcohol-based disinfectants.
* **Alcohol can be irritating to the skin and eyes.** It's crucial to use it with caution and avoid contact with sensitive areas.
* **Alcohol should not be used to disinfect surfaces that are likely to be exposed to food.**

**In conclusion, while alcohol can be an effective tool for inactivating viruses, it's not a magic bullet.** Understanding the specific virus you're dealing with, the concentration of alcohol, and the duration of contact is crucial for maximizing its effectiveness. Remember, it's always a good idea to consult with a healthcare professional or follow the guidelines from your local health authorities for the most accurate and up-to-date information.
read more >>

The answer has to do with concentrations. Once you're already infected with a cold or flu virus, it's in your bloodstream. That means that if you want to kill it, you'd have to kill it in your blood. Yes, consuming alcohol does raise your blood-alcohol levels, but not nearly enough.read more >>