This whole situation bore further watching, especially since Nodoka said

she considered Ranko to be her niece instead of actually being her niece. 
If they were not related by family, then perhaps it was time for her to
try something to encourage Ranko and Ranma.<<

One would think that Urd would be trying to solve Ranma's >love problems than 

trying to add to them. Ranma already >has 4 love interests. Although Urd's 
interference has >added to Keiichi's problems in the past, she has never 

intentionally and knowingly caused problems for anyone.

	Hmm this was the problem I saw in the story.  To quote the (Translated) 
Manga, Belldandy said "My sister tends to think the end justifies the means.  
But then she gets so wrapped up in the MEANS she forgets what the END was."  She 
always starts out by thinking that the end result of whatever her plan is will 
benefit her target, then she decides on a plan and gets too wraped up in it to 
see weather or not it will really be of benefit.

Getting Ranma and Ranko together would be totally unlike >her, instead she 

would be trying to get Ranma with one of >his love interests.
	Unless she thought that it would be beneficial to NODOKA.  The paragraph 
hints at that, but I think it should be stated a lot more clearly and openly.	

But the idea of Ranma being affected by the combo love >potion you created is 

intriguing, perhaps you could find >another way to use it?

I just thought of something. Though Ranma might, MIGHT, >try on some colonge. 

There's no way he's going to touch >perfume. So how are you going to apply the 
perfume to >'Ranko'?
	And of course there's the fact that Ranma has been subjected to mind 
altering substances and love magic before.  He'll definately spot the urge to 
wear the perfume and colougne as being unlike him.

The only way for them not to want to put the cologne or perfume on is
after they've had sex about ten or so times.

	Hmm, but since Ranko and Ranma have the same body, the two potions will 
interact directly in his blood.  I wonder what sort of unplanned side effects 
this might have. 

I'd love to see Urd use this on Keiichi and Belldandy. And >the love potion 

should make them want to have sex too! >Otherwise, it might cause problems 
related to its overuse.
	Well I believe the potions are designed to only work on Ranma/Ranko 
respectively.  Of course she could probably convince Washu to help her make a 
set for Belldandy and Keichi, although it would require some of their hair, and 
she might be hesitant after what will happen with Ranma.