No, for WikiPedia “manna” = bug poop.
And none of us knows for certain what manna was then, or this substance is now.
On the other hand, those who hate God will choose to believe manna was bug poop then, and use this episode to mock believers today.
Seriously, go stand under any Crape Myrtle tree in California during the summer and you'll experience the same thing. Makes a mess of my truck.