Any aggressive responses vs scandinavian defence as white?

What aggressive answers are there for White against the Scandinavian defense?

Depends on which variation.

Here's one in the Qa5 line.

1.e4, d5 2.exd5,Qxd5 2.Nc3, Qa5 3.b4,...

Against 2..., Nf6 maybe have a look at 3. Bb5+. Not very popular (so you might catch people out with it), reasonably sharp in places. I'll not offer more lines here (shhh! Your future opponents might be looking) but the underlying idea is that the 3..., c6 sac is pretty feeble so Black has to put something on d7 meaning any ability to recapture the White Pd5 is delayed. And you can use that time to develop. Not a line for everyone, mentioned purely for what it's worth. PS: some old (20th century) books have at least one very bad and tactically flawed losing line for White as the main line after 3. Bb5+ so check any old book lines with an engine.

2. d4 transposes into the Blackmar-Diemer gambit

Yes unless black responds with 2...,c6 then it becomes a Caro kann.

If black responds with 2...,e6 then it becomes a French.