[ Avira AntiVirus ] If I delete a virus from my quarantine, does it leave my computer?

Or does it go back to the file in my computer which it was located before? Please be clear, I'm 13 and don't understand things too well, ha-ha  But please help me! I won't move anything from my quarantine until I know what things do. I am using Avira Antivirus. The virus found on my computer was discovered four days ago( I think), by the name of "ADWARE/Agent.aeph". It's a malware. I don't know too much about these things, so please be...not too big-wordy. 

Better delete the thing from the quarantine because the virus in the file cannot be cleaned, so the antivirus programme will move the virus into quarantine.

Here you need to know some things where if that is a compressed file, some antivirus programmes like free versions cannot the clean the infected files in a computer so it moves the file to quarantine. if you wanna recover that files and want to delete only infected file, disable the antivirus system and then extract the files and enable the antivirus system, it will scan the the files infected file will be quarantined.

I have faced many problems like this because whenever the infection found in compressed file the antivirus deletes the total compressed file and leads loss of the other files. If you go through the premium versions of the antivirus programmes you will not face this problems but when you are going to extract the infected compressed files you need be careful (infection depends on virus) do at your own risk.