Which is why american style manuals will always ask you to merge it with the subsequent word, without a hyphen Given current usage, i very much doubt blessed is strictly considered religious (whatever that might mean) There seem to be three terms used by experts in the field
Non smoke area Stock Vector Images - Alamy
However, the other two seem to be more commonly used in that context.
This really depends on the example.
In expressions in which figures and abbreviations (or symbols.