Is it Safe to Run a Virus from a Virtual Machine?

"It is generally safe for you to run a virus from a virtual machine as long as you are making sure that the virtual machine is isolated well enough from the host computer. However, if you do not isolate it well enough, there is a chance that you will end up compromising the health of the host." source: https://gigmocha.com/is-it-safe-to-run-a-virus-from-a-virtual-machine/