If you don't want to use a paper wallet (and I can't see why you wouldn't) and have a significant amount of BTC in your Electrum wallet you could always use Tails.

Download the latest .iso and create a Tails live USB stick. Then boot into Tails, connect your internet, go to the Electrum page in Tails' web browser. Download and run Electrum and restore your wallet from your 12 word seed (written on a piece of paper, or however you like to store it).

When you're done using Electrum, close down Tails and it wipes everything it has done. It doesn't touch your hard disk and even performs a memory wipe. There is no trace of what you have done in Tails anywhere on your computer.

When you reboot back into your usual OS there is no trace of anything you've done in Tails.

I would use this method if you have a large amount of BTC in a Electrum wallet that you only use once every couple of days/weeks.

You can have a permanent Electrum wallet (with a different seed to your big one, containing a smaller amount of BTC on your regular OS for shopping etc.