Auto draw a new glyph after generated

I have trouble with some missing glyphs.
Let say I need copy 500 glyphs from another font (source font). But after that, it is still missing 2-3 glyphs because it doesn’t exist in source font and I can’t find it out on the internet
So the question: Is your app can auto draw a default glyph after it was generated?

The font in the back uses a system font, and copying it to another font is most likely a copyright infringement. I don’t know what your source file is, but 嗅 is a pretty common character that should be easy enough to find in open source fonts such as M+, Source Han Sans, and Source Han Serif.

Hi Tosche, I have forgotten about system fonts. Now I already found it.
Thank you